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Panasonic G7 versus Panasonic GX8

The Panasonic Lumix DMC-G7 and the Panasonic Lumix DMC-GX8 are two digital cameras that were revealed to the public, respectively, in May 2015 and July 2015. Both the G7 and the GX8 are mirrorless interchangeable lens cameras that are equipped with a Four Thirds sensor. The G7 has a resolution of 15.8 megapixel, whereas the GX8 provides 20.2 MP. Read on to find out how these two cameras compare with respect to their size, their sensors, their features, and their reception by expert reviewers.

Body comparison: Panasonic G7 vs Panasonic GX8

The side-by-side display below illustrates the physical size and weight of the Panasonic G7 and the Panasonic GX8. Three consecutive views from the front, the top, and the rear side are shown. All width, height and depth dimensions are rounded to the nearest millimeter. You can also toggle the display to switch to a percentage comparison if you prefer that the measures are being expressed in relative terms (in this case, the camera on the left – the G7 – represents 100 percent across all the size and weight measures).

Compare Panasonic G7 vs Panasonic GX8
G7 versus GX8 top view
G7 and GX8 rear side

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Panasonic GX8 is somewhat smaller (3 percent) than the Panasonic G7. However, the GX8 is markedly heavier (19 percent) than the G7. It is noteworthy in this context that the GX8 is splash and dust-proof, while the G7 does not feature any corresponding weather-sealing.

The above size and weight comparisons are to some extent incomplete since they do not consider the interchangeable lenses that both of these cameras require. In this particular case, both cameras feature the same lens mount, so that they can use the same lenses. You can find an overview of suitable optics in the Micro Four Thirds Lens Catalog. Mirrorless cameras, such as the two under consideration, have the additional advantage of having a short flange to focal plane distance, which makes it possible to mount many lenses from other systems onto the camera via adapters.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. If you want to switch the focus of the display and review another camera pair, just select a new right or left comparator from among the camera models in the table. Alternatively, you can also move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

Camera Body Specifications
Camera Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(y/n)
Camera
Launch
(year)
Launch
Price
(USD)
Street
Price
(amazon)
Used
Price
(ebay)
Panasonic G7 (⇒ rgt) 125 mm 86 mm 77 mm 410 g 350 no 2015 649discont. check
Panasonic GX8 (⇒ lft) 133 mm 78 mm 63 mm 487 g 330 YES 2015 1,199discont. check
Olympus E-M1 II (⇒ lft | rgt) 134 mm 91 mm 67 mm 574 g 440 YES 2016 1,999 latest check
Olympus E-M5 II (⇒ lft | rgt) 124 mm 85 mm 45 mm 469 g 310 YES 2015 1,099 latest check
Panasonic GX9 (⇒ lft | rgt) 124 mm 72 mm 47 mm 407 g 260 no 2018 849 latest check
Panasonic GH5 (⇒ lft | rgt) 139 mm 98 mm 87 mm 725 g 410 YES 2017 1,999 latest check
Panasonic GX80 (⇒ lft | rgt) 122 mm 71 mm 44 mm 426 g 290 no 2016 799 latest check
Panasonic GF7 (⇒ lft | rgt) 107 mm 65 mm 33 mm 266 g 230 no 2015 499discont. check
Panasonic GM5 (⇒ lft | rgt) 99 mm 60 mm 36 mm 211 g 220 no 2014 749discont. check
Panasonic G6 (⇒ lft | rgt) 122 mm 85 mm 71 mm 390 g 340 no 2013 599discont. check
Panasonic GM1 (⇒ lft | rgt) 99 mm 55 mm 30 mm 204 g 230 no 2013 749discont. check
Panasonic GX7 (⇒ lft | rgt) 123 mm 71 mm 55 mm 402 g 350 no 2013 999discont. check
Panasonic G5 (⇒ lft | rgt) 120 mm 83 mm 71 mm 396 g 320 no 2012 599discont. check
Panasonic G3 (⇒ lft | rgt) 115 mm 84 mm 47 mm 336 g 270 no 2011 599discont. check
Panasonic GH2 (⇒ lft | rgt) 124 mm 90 mm 76 mm 442 g 330 no 2010 1,499discont. check
Panasonic G2 (⇒ lft | rgt) 124 mm 84 mm 74 mm 428 g 360 no 2010 599discont. check
Panasonic G1 (⇒ lft | rgt) 124 mm 84 mm 45 mm 360 g 410 no 2008 599discont. check

The price is, of course, an important factor in any camera decision. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The G7 was launched at a markedly lower price (by 46 percent) than the GX8, which puts it into a different market segment. Usually, retail prices stay at first close to the launch price, but after several months, discounts become available. Later in the product cycle and, in particular, when the replacement model is about to appear, further discounting and stock clearance sales often push the camera price considerably down. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.


Sensor comparison: Panasonic G7 vs Panasonic GX8

The size of the imaging sensor is a crucial determinant of image quality. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and richer color depth than smaller pixels in a sensor of the same technological generation. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its background. On the downside, larger sensors are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Both cameras under consideration feature a Four Thirds sensor and have a format factor (sometimes also referred to as "crop factor") of 2.0. Within the spectrum of camera sensors, this places the review cameras among the medium-sized sensor cameras that aim to strike a balance between image quality and portability. Both cameras feature a native aspect ratio (sensor width to sensor height) of 4:3.

Panasonic G7 and Panasonic GX8 sensor measures

While the two cameras under review share the same sensor size, the GX8 offers a higher resolution of 20.2 megapixel, compared with 15.8 MP of the G7. This megapixel advantage translates into a 13 percent gain in linear resolution. On the other hand, these sensor specs imply that the GX8 has a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.34μm versus 3.77μm for the G7). It is noteworthy in this context that the two cameras were released in close succession, so that their sensors are from the same technological generation.

G7 versus GX8 MP

For most cameras, data on sensor performance has been reported by DXO Mark. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.

Sensor Characteristics
Camera Sensor
Class
Resolution
(Megapixel)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Panasonic G7 (⇒ rgt) Four Thirds 15.8 4592 3448 4K/30p - - - -
Panasonic GX8 (⇒ lft) Four Thirds 20.2 5184 3888 4K/30p 23.5 12.6 806 75
Olympus E-M1 II (⇒ lft | rgt) Four Thirds 20.2 5184 3888 4K/30p 23.7 12.8 1312 80
Olympus E-M5 II (⇒ lft | rgt) Four Thirds 15.9 4608 3456 1080/60p 23.0 12.5 842 73
Panasonic GX9 (⇒ lft | rgt) Four Thirds 20.2 5184 3888 4K/30p .. .. .. ..
Panasonic GH5 (⇒ lft | rgt) Four Thirds 20.2 5184 3888 4K/60p 23.9 13.0 807 77
Panasonic GX80 (⇒ lft | rgt) Four Thirds 15.8 4592 3448 4K/30p 22.9 12.6 662 71
Panasonic GF7 (⇒ lft | rgt) Four Thirds 15.8 4592 3448 1080/60p - - - -
Panasonic GM5 (⇒ lft | rgt) Four Thirds 15.8 4592 3448 1080/60p 22.1 11.7 721 66
Panasonic G6 (⇒ lft | rgt) Four Thirds 15.9 4608 3456 1080/60p 21.3 11.5 639 61
Panasonic GM1 (⇒ lft | rgt) Four Thirds 15.8 4592 3448 1080/60i 22.3 11.7 660 66
Panasonic GX7 (⇒ lft | rgt) Four Thirds 15.8 4592 3448 1080/60p 22.6 12.2 718 70
Panasonic G5 (⇒ lft | rgt) Four Thirds 15.9 4608 3456 1080/60p - - - -
Panasonic G3 (⇒ lft | rgt) Four Thirds 15.8 4592 3448 1080/60i 21 10.6 667 56
Panasonic GH2 (⇒ lft | rgt) Four Thirds 15.9 4608 3456 1080/60i 21.2 11.3 655 60
Panasonic G2 (⇒ lft | rgt) Four Thirds 12.0 4000 3000 720/30p 21.2 10.3 493 53
Panasonic G1 (⇒ lft | rgt) Four Thirds 12.0 4000 3000 no 21.1 10.3 463 53

Many modern cameras are not only capable of taking still images, but can also record movies. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, and both provide the same movie specifications (4K/30p).

Feature comparison: Panasonic G7 vs Panasonic GX8

Apart from body and sensor, cameras can and do differ across a range of features. The G7 and the GX8 are similar in the sense that both feature an electronic viewfinder, which is helpful when framing images in bright sunlight. Moreover, their viewfinders offer an identical resolution of 2360k dots. The adjacent table lists some of the other core features of the Panasonic G7 and Panasonic GX8 along with similar information for a selection of comparators. The full specs-sheets can be found in the camera manual or, for example, in the dpreview camera hub.

Core Features
Camera Viewfinder
(Type or
'000 dots)
Control
Panel
(Y/n)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(Y/n)
Shutter
speed
(1/sec)
Shutter
flaps
(1/sec))
Build-in
Flash
(GN)
Build-in
Image
Stab
Panasonic G7 (⇒ rgt) 2360 no 3.0 1040 swivel YES 4000 7.0 9.3 no
Panasonic GX8 (⇒ lft) 2360 no 3.0 1040 swivel YES 8000 10.0 no YES
Olympus E-M1 II (⇒ lft | rgt) 2360 no 3.0 1037 swivel YES 8000 18.0 no YES
Olympus E-M5 II (⇒ lft | rgt) 2360 no 3.0 1037 swivel YES 8000 10.0 no YES
Panasonic GX9 (⇒ lft | rgt) 2760 no 3.0 1240 tilting YES 4000 9.0 6 YES
Panasonic GH5 (⇒ lft | rgt) 3680 no 3.2 1620 swivel YES 8000 12.0 no YES
Panasonic GX80 (⇒ lft | rgt) 2765 no 3.0 1040 tilting YES 4000 8.0 6 YES
Panasonic GF7 (⇒ lft | rgt) no no 3.0 1040 tilting YES 500 5.8 4 no
Panasonic GM5 (⇒ lft | rgt) 1166 no 3.0 921 fixed YES 500 5.8 no no
Panasonic G6 (⇒ lft | rgt) 1440 no 3.0 1036 swivel YES 4000 7.0 10.5 no
Panasonic GM1 (⇒ lft | rgt) no no 3.0 1036 fixed YES 500 5.0 4 no
Panasonic GX7 (⇒ lft | rgt) 2760 no 3.0 1040 tilting YES 8000 5.0 7 YES
Panasonic G5 (⇒ lft | rgt) 1440 no 3.0 920 swivel YES 4000 6.0 10.5 no
Panasonic G3 (⇒ lft | rgt) 1440 no 3.0 460 swivel YES 4000 4.0 11 no
Panasonic GH2 (⇒ lft | rgt) 1534 no 3.0 460 swivel no 4000 3.0 15.6 no
Panasonic G2 (⇒ lft | rgt) 1440 no 3.0 460 swivel YES 4000 2.6 11 no
Panasonic G1 (⇒ lft | rgt) 1440 no 3.0 460 swivel no 4001 3.0 10.5 no

Both the G7 and the GX8 have been discontinued, but can regularly be found used on eBay. The G7 was replaced by the Panasonic G85, while the GX8 was followed by the Panasonic GX9.

Review summary: Panasonic G7 vs Panasonic GX8

So what conclusions can be drawn? Is the Panasonic G7 better than the Panasonic GX8 or vice versa? Below is a summary of the relative strengths of each of the two contestants.


Arguments in favor of the Panasonic Lumix DMC-G7:

  • Less heavy: Is lighter (by 77g or 16 percent) and hence easier to carry around.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • More affordable: Was introduced into a lower priced category (46 percent cheaper at launch).

Advantages of the Panasonic Lumix DMC-GX8:

  • More detail: Has more megapixels (20.2 vs 15.8MP), which boosts linear resolution by 13%.
  • Faster shutter: Has higher mechanical shutter speed (8000/sec vs 4000/sec) to freeze action.
  • Faster burst: Shoots at higher frequency (10 vs 7 flaps/sec) to capture the decisive moment.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Sharper images: Has stabilization technology build-in to reduce the impact of hand-shake.

If the number of relative strengths (bullet points above) is taken as a guide, the GX8 emerges as the winner of the match-up (5 : 3 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision.

G7 03:05 GX8

In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it remains partial and cannot reveal, for example, the handling experience and imaging performance when actually working with the G7 or the GX8. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased. This is why hands-on reviews by experts are important. The table below summarizes the assessments of some of the best known camera review sites. You can find the full text of the reviews, respectively, at cameralabs.com, dpreview.com, ephotozine.com, imaging-resource.com, and photographyblog.com.

Review scores
Camera camera
labs
.com
dp
review
.com
ephoto
zine
.com
imaging
resource
.com
photography
blog
.com
Camera
Launch
(year)
Launch
Price
(USD)
Street
Price
(amazon)
Used
Price
(ebay)
Panasonic G7 (⇒ rgt) HiRec 80/100 Silver 5/5 4.5/5 4.5/5 2015 649discont. check
Panasonic GX8 (⇒ lft) Rec 82/100 Silver 4.5/5 5/5 4.5/5 2015 1,199discont. check
Olympus E-M1 II (⇒ lft | rgt) HiRec 85/100 Gold 4.5/5 5/5 4.5/5 2016 1,999 latest check
Olympus E-M5 II (⇒ lft | rgt) HiRec 81/100 Silver 5/5 4.5/5 5/5 2015 1,099 latest check
Panasonic GX9 (⇒ lft | rgt) Rec .. 4.5/5 .. 4.5/5 2018 849 latest check
Panasonic GH5 (⇒ lft | rgt) HiRec 85/100 Gold 4.5/5 5/5 5/5 2017 1,999 latest check
Panasonic GX80 (⇒ lft | rgt) HiRec 82/100 Silver 5/5 4.5/5 5/5 2016 799 latest check
Panasonic GF7 (⇒ lft | rgt) Rec - 4.5/5 4.5/5 4.5/5 2015 499discont. check
Panasonic GM5 (⇒ lft | rgt) Rec 77/100 Silver 5/5 5/5 4.5/5 2014 749discont. check
Panasonic G6 (⇒ lft | rgt) HiRec - 5/5 - 4.5/5 2013 599discont. check
Panasonic GM1 (⇒ lft | rgt) Rec 78/100 Gold 5/5 4.5/5 4.5/5 2013 749discont. check
Panasonic GX7 (⇒ lft | rgt) Rec 79/100 Silver 5/5 4.5/5 5/5 2013 999discont. check
Panasonic G5 (⇒ lft | rgt) HiRec - 4.5/5 4.5/5 4.5/5 2012 599discont. check
Panasonic G3 (⇒ lft | rgt) 88/100 HiRec 75/100 Silver 4.5/5 4.5/5 5/5 2011 599discont. check
Panasonic GH2 (⇒ lft | rgt) 86/100 HiRec 79/100 Silver 4.5/5 4.5/5 5/5 2010 1,499discont. check
Panasonic G2 (⇒ lft | rgt) - 72/100 Silver 4/5 4/5 4.5/5 2010 599discont. check
Panasonic G1 (⇒ lft | rgt) 88/100 HiRec 70/100 HiRec 4/5 4.5/5 4.5/5 2008 599discont. check

The above review scores should be interpreted with care, though. The assessments were made in relation to similar cameras of the same technological generation. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and comparisons of ratings among very different cameras or across long time periods have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.


Other camera comparisons

Did this review help to inform your camera decision process? If you would like to see a different side-by-side camera review, just make a corresponding selection in the search boxes below. An an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool. If you do not see the camera that you are looking for, please send me an email, and I will try to locate and add the respective data to the application.

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